Home / 11,031.72-15,221.70-6,841

Finding the Fourth Proportional to 11,031.72, 15,221.70 and 6,841

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Solution

The fourth proportional to 11,031.72, 15,221.70 and 6,841 is: 9,439.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,031.72 : 15,221.70 = 6,841 : x
  2. Step 2: Convert to fraction form
    11,031.72/15,221.70 = 6,841/x
  3. Step 3: Cross multiply
    11,031.72x = 15,221.70 × 6,841
  4. Step 4: Simplify right side
    11,031.72x = 104,131,649.70
  5. Step 5: Solve for x
    x = 104,131,649.70/11,031.72
  6. Step 6: Final answer
    x = 9,439.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.